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- 2.NBT.A.1Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:
- 2.NBT.A.2Count within 1000; skip-count by 5s, 10s, and 100s.
- 2.NBT.A.3Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.
- 2.NBT.A.4Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.

Each Number Has a Place: Tens and Ones

2nd Grade Math

Â» Unit:

Each Number Has a Place

Big Idea:The big idea of this lesson is that the base-ten number system uses models to show numbers. The ones digit represents how many ones, and the tens digit represents how many groups of ten.

Comparing Numbers Written in Expanded Form

2nd Grade Math

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Comparing Numbers

Big Idea:Students take their understanding of place value to the next level when they compare numbers written in expanded form.

Place Value to Thousands

3rd Grade Math

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Review for Testing

Big Idea:This lesson addresses the foundational skill of place value through modeling.

Excellent Mathematical Explanations

2nd Grade Math

Â» Unit:

Comparing Numbers

Big Idea:Students use place value vocabulary to write excellent mathematical explanations about why a comparison statement is true or false.

Moving Along In Hundreds

2nd Grade Math

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Everything In Its Place

Big Idea:The Common Core standard is that students understand that the numbers 100, 200, etc. represent so many groups of 100.

How Big Is One Thousand

2nd Grade Math

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More Complex Numbers and Operations

Big Idea:Students can get a picture of how big 1,000 is as they build and compare 3-digit numbers.

Place Value in Japanese

2nd Grade Math

Â» Unit:

Place Value

Big Idea:Identifying the place value of numbers is an important skill for second grade. Using the Japanese names for numbers allows for a review of place value identification.

More than 100

2nd Grade Math

Â» Unit:

Place Value

Big Idea:Understanding numbers above 100 and the patterns that are created will help students build a stronger understanding of larger numbers.

Put It Together and Take It Apart

2nd Grade Math

Â» Unit:

Numbers Have Patterns

Big Idea:Students increase their understanding of place value by manipulating larger numbers.

Place Value Review

2nd Grade Math

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Place Value

Big Idea:The word value is often confusing to students. Today's lesson will help to clarify the meaning of the term value.

Assessment

2nd Grade Math

Â» Unit:

More Complex Numbers and Operations

Big Idea:Assessment provides us with a chance to see what children understand and what they still need to work on.

Moving Into Thousands

2nd Grade Math

Â» Unit:

Everything in Its Place

Big Idea:To make sense of numbers in the thousands, 2nd grade students need practice identifying place value positions and using place value strategies in numbers to 1,000.

The Purpose of Zero

2nd Grade Math

Â» Unit:

Money

Big Idea:Zero makes a difference, depending on where it is. It may be worth nothing, but it has a special place in numbers.

Larger Numbers: A Tie to Social Studies

2nd Grade Math

Â» Unit:

Numbers Have Patterns

Big Idea:I want my students to realize that numbers are everywhere and math is applicable to almost all other subjects. Geography offers a perfect opportunity for students to make this connection.

More than 1,000

2nd Grade Math

Â» Unit:

Place Value

Big Idea:In preparation for third grade students are introduced to numbers above 1,000 and how the place values repeat the patterns found in numbers in the hundreds.

2.NBT.A.1

Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, 0 tens, and 6 ones. Understand the following as special cases:

2.NBT.A.2

Count within 1000; skip-count by 5s, 10s, and 100s.

2.NBT.A.3

Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

2.NBT.A.4

Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.